- Characterization and Evaluation of Materials 11
- Ecology 7
- Environmental Management 7
- Optical and Electronic Materials 7
- Atmospheric Protection/Air Quality Control/Air Pollution 5
- Ecotoxicology 5
- Monitoring/Environmental Analysis 5
- Science, Humanities and Social Sciences, multidisciplinary 5
- Applied and Technical Physics 4
- Science, multidisciplinary 4
- Electronics and Microelectronics, Instrumentation 3
- Hydrogeology 3
- Materials Science, general 3
- Nanotechnology 3
- Solid State Physics 3
- Atomic, Molecular, Optical and Plasma Physics 2
- Biodiversity 2
- Biomedical Engineering and Bioengineering 2
- Chemistry/Food Science, general 2
- Earth Sciences, general 2